UPILEX

Upilex is a heat-resistant polyimide film that is the product of the polycondensation reaction between biphenyl tetracarboxylic dianhydride (BPDA) monomers and a diamine.

General applications of Upilex include their use in flexible printed circuits, electric motor and generator insulation, high temperature wire and cable wrapping, and specialty pressure sensitive tapes.

Polyimides have also been extensively studied in gas and humidity sensors, where the concentration is determined by monitoring the capacitance of modified Upilex films.

[2] Upilex-S, along with other polyimides Kapton HN and Kapton E, have been investigated by NASA with respect to their radiation durability for possible use in the Next Generation Space Telescope (later renamed the James Webb Space Telescope), where polymer film layer sunshields must operate at low temperatures and in the presence of cosmic rays.

Micro-heating elements can be integrated on polyimide sheets, which gives it the benefit of robustness and low-power consumption required for high temperatures.